Valve for engines



H. CROWE.

VALVE FOR ENGINES.

APPLICATION FILED SEPT. 27. 1911.

2 SHEETS-SHEET I.

CROWE,

VALVE FOR ENGINES.

APPLFCATION man SEPT. 27. 1917.

1,367,357., Patented Feb. 1,1921.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

HENRY CROWE, 0F SALTBURN-BY-THE-SEA, ENGLAND, ASSIGNOR TO GALLOWAYS LIMITED, 0]! MANCHESTER, ENGLAND.

VALVE non nnemns.

Sipecification of Letters Patent.

Patented Feb. 1, 1921.

Application filed September 27, 1917. Serial No. 193,587.

To all whom it may concern:

Be it known that I, HENRY Cnown, a subject of the King of Great Britain, residing in Saltburn-by-the Sea, England, have invented certain new and useful Improvements in and Relating to Valves for Engines, of which the following is a specification. I i

This invention relates to renewable fluidcooled valve seatings of internal combustion engines, which seatings are of the type wherein they are formed separately from and fitted to valve boxes or casings which the outer valve casing or any other portion of the body of the engine with which the valve is associated. The joint or joints of the seating may be made in any position or plane which may be found most desirable according to the general shape or arrangement of the whole seating.

In a convenient arrangement the seating may be separated by joints near the two ends of the seating into three parts or sec tions, (1) the head or actual valve seating face, (2) a main central part or section, and (3) the outer end part or section.

Such an arrangement is, by way of example, illustrated in the drawings, wherein:

Figure 1 is a vertical section showing an exhaust valve embodying the invention c0nnected to the exhaust port of an engine; and

Fig. 2 is a vertical section of the valve seating shown in Fig. 1 but taken at a right angle to the latter figure.

According to the invention the exhaust port B connecting the cylinder A of the engine with the valve may be of any suitable or convenient construction, and the valve casing C may also be of any ordinary construction. as shown, with or without a. water jacket. i

The valve seating is, in the construction shown, made in three pieces, the actual valve seating I), the main central part E with the gulde e for the valve spindle f and the outer end part Gr. These parts are made with passages or recesses which, when the parts are assembled, register or coincide with one another to form a water chamber or jacket H which is independent of the valve casing and cylinder. The parts may be held together in any suitable manner, for instance, by bolts passed through the separate parts, but I consider that the arrangement shown in the drawing is the best and simples t for the purpose.

According to this arrangement the parts D and E are held in position simply by the pressure of the part G upon them, this latter part being bolted or screwed to the valve casing C by means of the flange g. In this arrangement, when the part G is unbolted or unscrewed the other parts come away Separately without any difiiculty and without disturbing the valve casing.

The tightness of the joints between the several parts may, if desired, be insured by means of any suitable jointing material of ordinary or known type, su h for instance as by means of flat copper rings.

Water may be introduced into and with.- drawn from the chamber H in any convenient manner, such for instance, as by pipes K passing through the end part G of the seating.

The invention is particularly applicable to the exhaust valves of internal combustion engines, but may also, if desired, be used for the inlet valves of same or for any similar valves which it is necessary to cool artificially.

Having thus described the nature of the said invention and the best means I know of carrying the same into practical effect, I claim 2- 1. An outlet valve for internal combustion engines, comprising a renewable fluid cooled valve seating made in two parts having complemental channels fitting together to form a cooling fluid circulation chamber and means independent of the cooling chamber systems of the engine cylinder for insuring a circulation of cooling fluid in said chamber.

2. In combination with a cylinder of an internal combustion engine, a valve, a valve casing connected to the cylinder, a renewable fluid-cooled valve seating, which is separate from the casing and is self-contained, said seating comprising a plurality of separate sections carried by the casing, said sections being formed with inwardly disposed passages adapted when the sections are assembled to register with one another and thereby form an inclosed chamber for cooling fluid, and means for removably securing the sections in operative positions to the casing.

3. "An outlet valve for internal combustion enginescomprising a renewable fluid cooled valve seating made in two parts having complemental channels fitting together to form a cooling fluid circulation chamber, a second cooling fluid chamber formed in one of the said two parts and communicating with the first cooling fluid chamber, said cooling fluid chambers being unconnected with the cooling chamber systems of the engine cylinder.

4;. In combination with a cylinder of an internal combustion engine, a valve; a valve casing COUHOLtGd to the cylinder; a renew- 'able fluid-cooled valve seating, separate HENRY CROWE.

\Vitnesses FRANK Fos'rnn, DOROTHY MAUI) BEESTON. 

